.member{
    display: inline-block;
    width: 200px;
    border: 1px dashed green;
    margin-left: 2px;
}

.container {
   overflow-x: hidden;
   overflow-y:auto;
   position: relative;
}
.holder {
  background-color:
  transparent;
  width: inherit;
}
.content {
  background-color: white;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
}